best labels for clothes that you re-sell?

[nicknack]

Both kiddos will need labels this year (got away without them last year!) but I re-sell a lot of their things so I'd like to get the labels off.
Which ones come off the most easily?
Thanks!

[KBecks]

If you've got really nice stuff, I'd do sew in labels. On the other hand, I wouldn't send anything really nice to school!